Unit 12 Practice Test - Solutions

Which of the following are nonelectrolytes? (Choose all that apply)

• CO₂

• NaCl (soluble)

• AgCl (insoluble)

• Li₃PO₄ (soluble)

Why is NaOH an electrolyte? (Choose all that apply)

• It is soluble.

• It is insoluble.

• It is ionic.

• It is covalent.

Which are characteristics of water? (Choose all that apply)

• Water is unable to dissolve other substances.

• Water has a high specific heat.

• Bug can walk on water due to surface tension.

• Water floats when in a solid form.

Which will increase the rate of dissolution? (Choose all that apply)

• Heating a solution

• Agitating a solution

• Increasing the surface area of the solute

• Increasing the surface pressure of solution

Which are pure substances? (Choose all that apply)

• Sodium

• Carbon Dioxide

• Salt Water

• Trail Mix

What is molarity?

• The number of kilograms of solute in one liter of solution.

• The number of moles of solute in one liter of solvent.

• The number of moles of solute in one liter of solution.

• The number of kilograms of solute in one liter of solvent.

When an element in group 2 on the periodic table forms an ion, what will the charge be on that ion?

• +1

• -1

• +2

• -2

What is an insoluble solid that collects at the bottom of a solution called?

• Solvent

• Ion

• Precipitate

• Reactant

What is it called when a solution contains less dissolved solute than the maximum amount at a given temperature?

• Unsaturated

• Saturated

• Supersaturated

• Insoluble

What refers to the amount of solute that can dissolve at a specific temperature?

• Rate of dissolution

• Solubility

• Solution

• Precipitation reaction